Luminescent diode chip with luminescence conversion element and angular filter element

US8405104B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Klaus Streubel · Hemau, DE
• Ralph Wirth · Lappersdorf, DE

Key dates

• Filing date: May 21, 2008
• Grant date: Mar 26, 2013
• Expiry date: Nov 11, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/84

Abstract

A luminescent diode chip includes a semiconductor body, which produces radiation of a first wavelength. A luminescence conversion element produces radiation of a second wavelength from the radiation of the first wavelength. An angular filter element reflects radiation that impinges on the angular filter element at a specific angle in relation to a main direction of emission back in the direction of the semiconductor body.